Portable valve grinder

Abstract

The utility model discloses a portable valve grinder relates to valve grinder equipment technical field, including transmission arm, one end of transmission arm is provided with drive structure, the other end of transmission arm is provided with the grinding end, and transmission arm can be up and down slidingly set up in the connecting sleeve, and the connecting sleeve is set up on the adjusting device, and the adjusting device is set up on the clamp, and the adjusting device includes X axle fixed part, and X axle fixed part is provided with X axle moving part, and one end of X axle moving part is rotatably connected with Y axle adjusting part, and the other end of X axle moving part is provided with the swing joint of Z axle fixed part, and Z axle fixed part is provided with Z axle adjusting part, and Z axle fixed part and Z axle adjusting part are connected through the adjusting piece, and one end of Z axle adjusting part and Y axle adjusting part is rotatably connected together. The utility model need not to loosen the connecting seat of valve grinder and reinstallation, can directly adjust the front and back position in Y axle direction, and has improved work efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of valve grinding machine equipment, and in particular to a portable valve grinding machine. Background Technology

[0002] In the industrial sector, valves, as key components of pipeline systems, directly affect production safety and efficiency through their sealing performance. Once wear or corrosion occurs on the valve sealing surface, traditional manual valve repair methods are often time-consuming, labor-intensive, and unreliable. Therefore, valve grinding machines are needed for polishing. Existing ordinary valve grinding machines (such as patents CN214351677U, a grinding device for gate valve body processing, and CN207840940U, a small gate valve body sealing surface grinding machine) can only adjust the arm length of the grinding arm in the Z-axis direction, the rotation angle of the X and Z-axis planes, and the forward / backward position in the X-axis direction after being connected to the valve flange via a connecting seat. The position in the Y-axis direction is fixed (as shown in the attached figure). Figure 1 As shown in the figure, if the area to be ground in the Y-axis direction is slightly larger than the grinding area of ​​the grinding disc, the connecting seat of the valve grinding machine needs to be loosened, adjusted to the position in the Y-axis direction, and then tightened again before grinding, which brings inconvenience to the grinding work. Utility Model Content

[0003] The purpose of this invention is to provide a portable valve grinding machine that solves the problem mentioned in the background art that existing ordinary valve grinding machines can only adjust the arm length of the grinding arm in the Z-axis direction, the rotation angle of the X-axis and Z-axis plane, and the front and rear position in the X-axis direction, but are not convenient to adjust the position in the Y-axis direction.

[0004] The present invention adopts the following technical solution:

[0005] This utility model discloses a portable valve grinding machine, including a transmission arm, one end of which is provided with a driving structure, and the other end of which is provided with a grinding end. The transmission arm is slidably disposed in a connecting sleeve, the connecting sleeve is disposed on an adjustment device, and the adjustment device is disposed on a clamp.

[0006] The adjustment device includes an X-axis fixed part, an X-axis moving part that moves axially along the X-axis, one end of the X-axis moving part being rotatably connected to a Y-axis adjusting part that moves axially along the Y-axis, and the other end of the X-axis moving part being movably connected to a Z-axis fixed part, the Z-axis fixed part being provided with a Z-axis adjusting part that can move up and down, the Z-axis fixed part and the Z-axis adjusting part being connected by an adjusting member, and one end of the Z-axis adjusting part being rotatably connected to the Y-axis adjusting part.

[0007] The connecting sleeve is mounted on the Y-axis adjusting part, and the X-axis fixing part is mounted on the clamp.

[0008] Preferably, the Y-axis adjusting part includes a Y-axis moving block and a Y-axis adjusting bolt. The Y-axis adjusting bolt is rotatably disposed on the side of the X-axis moving part near the connecting sleeve. A threaded hole is provided in one side of the Y-axis moving block, and the Y-axis moving block is threadedly connected to the Y-axis adjusting bolt.

[0009] A connecting shaft hole is provided on the other side of the Y-axis moving block, and the connecting shaft hole is rotatably connected to the Z-axis adjusting part.

[0010] Preferably, the Y-axis moving block has an L-shaped structure, and the Y-axis adjusting bolt is threadedly connected to the corner position of the Y-axis moving block;

[0011] The vertical plate of the Y-axis moving block is provided with a dovetail groove on its side wall, and a dovetail slide rail is provided on one side wall of the connecting sleeve. The dovetail slide rail is located in the dovetail groove and is connected to the dovetail groove by means of a bolt assembly.

[0012] Preferably, one end of the X-axis moving part is provided with a first connecting hole plate, and the other end of the X-axis moving part is provided with a second connecting hole plate;

[0013] The Y-axis adjusting bolt is rotatably mounted on the first connecting hole plate;

[0014] The Z-axis fixing part includes a Z-axis connecting rod and a Z-axis slider. The Z-axis connecting rod is rotatably connected to the second connecting hole plate, and the Z-axis connecting rod is arranged parallel to the Y-axis adjusting bolt. The Z-axis slider is slidably connected to the Z-axis connecting rod.

[0015] One end of the Z-axis adjustment part is provided with a pin, and the Z-axis adjustment part is rotatably connected to the connecting shaft hole by means of the pin, and the rotation axis of the connecting shaft hole is parallel to the Y-axis adjustment bolt;

[0016] The other end of the Z-axis adjustment part is provided with a vertically arranged threaded hole. The adjustment component is a bolt structure. The adjustment component is threadedly connected to the threaded hole of the Z-axis adjustment part. The bottom end of the adjustment component passes through the Z-axis adjustment part and is rotatably connected to the Z-axis slider.

[0017] Preferably, the X-axis fixing part includes an X-axis fixing frame disposed on the clamp, and a rotatable X-axis adjusting bolt is disposed inside the X-axis fixing frame, the X-axis adjusting bolt being perpendicular to the direction of the Y-axis adjusting bolt;

[0018] The X-axis moving part includes a base plate, the first connecting hole plate and the second connecting hole plate are disposed on the base plate, and an internal thread block is fixedly connected to the bottom surface of the base plate. The internal thread block is provided with a threaded hole and is threadedly connected to the X-axis adjusting bolt. The two side walls of the internal thread block are slidably connected to the two side inner walls of the X-axis fixing frame by means of slide rail grooves.

[0019] Preferably, the fixture includes a fixture frame, the X-axis fixing part is disposed on the fixture frame, a fixture screw is rotatably connected inside the fixture frame, a movable gripper block is threadedly connected to the fixture screw, the two side walls of the movable gripper block are slidably connected to the inner wall of the fixture frame by means of a slide rail groove, and a movable gripper is disposed below the movable gripper block;

[0020] The front end of the clamp frame is provided with a fixed gripper.

[0021] Preferably, the transmission arm includes a transmission arm housing, a drive gear rotatably connected to the top end of the transmission arm housing, and a driven gear rotatably connected to the bottom end of the transmission arm housing. The drive gear and the driven gear are connected by a chain drive.

[0022] The driving gear is poweredly connected to the driving structure, and the driven gear is connected to the grinding end.

[0023] Preferably, the drive structure includes a motor, and the output end of the motor is connected to the shaft end of the drive gear via a coupling.

[0024] Preferably, the grinding end includes a grinding disc, and a universal joint is provided at the center of the grinding disc, the universal joint being connected to the shaft end of the driven gear.

[0025] Preferably, the transmission arm housing is further provided with a tensioning device, which includes a tensioning sleeve and a tensioning adjusting bolt. The tensioning sleeve is slidably sleeved on the top of the transmission arm housing, and the drive gear is rotatably connected to the tensioning sleeve.

[0026] The bottom end of the tension adjusting bolt is rotatably connected to the housing of the transmission arm, and the upper end of the tension adjusting bolt is threadedly connected to the tensioning sleeve.

[0027] The drive structure is mounted on one side of the tensioning sleeve via a frame.

[0028] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0029] This utility model incorporates an X-axis fixing part, an X-axis moving part, a Y-axis adjusting part, a Z-axis fixing part, a Z-axis adjusting part, and adjusting components. This allows for adjustment of the rotation angle of the grinding machine's transmission arm in the X-axis and Z-axis planes, as well as its forward and backward position in the X-axis direction. It also allows for adjustment of its forward and backward position in the Y-axis direction, eliminating the need to loosen and reinstall the valve grinding machine's connecting seat, thus improving work efficiency. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings.

[0031] Figure 1 This is a schematic diagram illustrating the working effect of the existing valve grinding machine mentioned in the background section.

[0032] Figure 2 This is a schematic diagram of the portable valve grinding machine of this utility model;

[0033] Figure 3 This is a schematic diagram of the adjusting device structure in the portable valve grinding machine of this utility model. Figure 1 ;

[0034] Figure 4 This is a schematic diagram of the adjusting device structure in the portable valve grinding machine of this utility model. Figure 2 ;

[0035] Figure 5 This is a cross-sectional view of the adjusting device in the portable valve grinding machine of this utility model;

[0036] Figure 6 This is a schematic diagram of the clamp structure in the portable valve grinding machine of this utility model;

[0037] Figure 7 This is a schematic diagram of the drive structure and grinding end structure in the portable valve grinding machine of this utility model;

[0038] Figure 8 This is a schematic diagram of the tensioning device in the portable valve grinding machine of this utility model. Figure 1 ;

[0039] Figure 9 This is a schematic diagram of the tensioning device in the portable valve grinding machine of this utility model. Figure 2 ;

[0040] Figure 10 This is a schematic diagram of the grinding end structure in the portable valve grinding machine of this utility model;

[0041] Figure 11 This is a schematic diagram illustrating the effect of using the portable valve grinding machine of this utility model;

[0042] Explanation of reference numerals in the attached drawings: 1. Drive structure; 1-1. Motor; 1-2. Coupling; 2. Transmission arm; 2-1. Transmission arm housing; 2-2. Drive gear; 2-3. Driven gear; 2-4. Chain; 2-5. Tensioning device; 2-5-1. Tensioning sleeve; 2-5-2. Tensioning adjusting bolt; 3. Grinding end; 3-1. Grinding disc; 3-1-1. Self-adhesive disc fixing seat; 3-2. Universal joint; 4. Connecting sleeve; 5. Adjusting device; 4-1. Dovetail slide rail; 5-1. X-axis fixing part; 5-1-1. X-axis fixing frame; 5-1-2. X-axis adjusting bolt; 5-2. X-axis movement Part; 5-2-1, First connecting hole plate; 5-2-2, Second connecting hole plate; 5-2-3, Base plate; 5-2-4, Internal thread block; 5-3, Y-axis adjustment part; 5-3-1, Y-axis moving block; 5-3-2, Y-axis adjusting bolt; 5-3-3, Connecting shaft hole; 5-3-4, Dovetail groove; 5-4, Z-axis fixing part; 5-4-1, Z-axis connecting rod; 5-4-2, Z-axis slider; 5-5, Z-axis adjustment part; 5-6, Adjusting component; 6, Fixture; 6-1, Fixture frame; 6-2, Fixture screw; 6-3, Moving gripper block; 6-4, Moving gripper; 6-5, Fixed gripper. Detailed Implementation

[0043] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0044] like Figure 2 As shown, this embodiment discloses a portable valve grinding machine, including a transmission arm 2. One end of the transmission arm 2 is provided with a drive structure 1, and the other end of the transmission arm 2 is provided with a grinding end 3. The transmission arm 2 is slidably disposed within a connecting sleeve 4. A threaded screw is provided on the connecting sleeve 4, and the end of the screw abuts against the transmission arm 2. Tightening the screw can fix the position of the transmission arm 2. The connecting sleeve 4 is disposed on an adjusting device 5, which is disposed on a clamp 6 for clamping onto the flange of the valve.

[0045] like Figure 3As shown, the adjustment device 5 includes an X-axis fixing part 5-1, an X-axis moving part 5-2 that can move axially along the X-axis, one end of the X-axis moving part 5-2 is rotatably connected to a Y-axis adjusting part 5-3 that can move axially along the Y-axis, and the other end of the X-axis moving part 5-2 is movably connected to a Z-axis fixing part 5-4, the Z-axis fixing part 5-4 is provided with a Z-axis adjusting part 5-5 that can move up and down, and the Z-axis fixing part 5-4 and the Z-axis adjusting part 5-5 are connected by an adjusting member 5-6, which allows the Z-axis adjusting part 5-5 to move up and down. The Z-axis adjusting part 5-5 is rotatably connected to one end of the Y-axis adjusting part 5-3; the connecting sleeve 4 is provided on the Y-axis adjusting part 5-3, and the X-axis fixing part 5-1 is provided on the clamp 6.

[0046] like Figure 4 As shown, the Y-axis adjustment part 5-3 includes a Y-axis moving block 5-3-1 and a Y-axis adjusting bolt 5-3-2. The Y-axis adjusting bolt 5-3-2 is rotatably disposed on the side of the X-axis moving part 5-2 near the connecting sleeve 4. A threaded hole is provided in one side of the Y-axis moving block 5-3-1, and the Y-axis moving block 5-3-1 is threadedly connected to the Y-axis adjusting bolt 5-3-2. A connecting shaft hole 5-3-3 is provided on the other side of the Y-axis moving block 5-3-1, and the connecting shaft hole 5-3-3 is rotatably connected to the Z-axis adjustment part 5-5.

[0047] like Figure 5 As shown, in this embodiment, the Y-axis moving block 5-3-1 has an L-shaped structure. The Y-axis adjusting bolt 5-3-2 is threadedly connected to the corner of the Y-axis moving block 5-3-1. A dovetail groove 5-3-4 is provided on the upper part of the vertical plate side wall of the Y-axis moving block 5-3-1. The dovetail groove 5-3-4 is only provided on the upper half of the vertical plate side wall of the Y-axis moving block 5-3-1. The area below the dovetail groove 5-3-4 is still a solid structure to support the dovetail slide rail 4-1. A dovetail slide rail 4-1 is provided on one side wall of the connecting sleeve 4. After inserting the dovetail slide rail 4-1 into the dovetail groove 5-3-4, the two can be connected together by tightening the dovetail slide rail 4-1 and the bottom of the Y-axis moving block 5-3-1 with the bolt assembly.

[0048] like Figure 4 and Figure 5 As shown, one end of the X-axis moving part 5-2 is provided with a first connecting hole plate 5-2-1, and the other end of the X-axis moving part 5-2 is provided with a second connecting hole plate 5-2-2. The Y-axis adjusting bolt 5-3-2 is rotatably mounted on the first connecting hole plate 5-2-1.

[0049] The Z-axis fixing part 5-4 includes a Z-axis connecting rod 5-4-1 and a Z-axis slider 5-4-2. The Z-axis connecting rod 5-4-1 is rotatably connected to the second connecting hole plate 5-2-2, and the Z-axis connecting rod 5-4-1 is arranged parallel to the Y-axis adjusting bolt 5-3-2. The Z-axis slider 5-4-2 is slidably connected to the Z-axis connecting rod 5-4-1.

[0050] In this embodiment, the Z-axis adjustment part 5-5 is a block structure with a threaded hole. One end of the Z-axis adjustment part 5-5 is fixedly provided with a pin, and the Z-axis adjustment part 5-5 is rotatably connected to the connecting shaft hole 5-3-3 by means of the pin, and the rotation axis of the connecting shaft hole 5-3-3 is parallel to the Y-axis adjustment bolt 5-3-2; the other end of the Z-axis adjustment part 5-5 is provided with a vertically arranged threaded hole, and the adjustment part 5-6 is a bolt structure. The adjustment part 5-6 is threadedly connected to the threaded hole of the Z-axis adjustment part 5-5, and the bottom end of the adjustment part 5-6 passes through the Z-axis adjustment part 5-5 and is rotatably connected to the Z-axis slider 5-4-2. It should be noted that the adjustment part 5-6 can rotate horizontally within the Z-axis slider 5-4-2 but cannot move up and down. When the Y-axis adjusting bolt 5-3-2 is rotated, the Y-axis moving block 5-3-1, under the force of the screw rotation, drives the Z-axis slider 5-4-2 to slide on the Z-axis connecting rod 5-4-1 via the Z-axis adjusting part 5-5 and adjusting component 5-6, thereby achieving the effect of moving the transmission arm 2 back and forth in the Y-axis direction. Simultaneously, if it is necessary to adjust the tilt angle of the transmission arm 2 in the X-axis and Z-axis planes, the adjusting component 5-6 can be rotated. The Z-axis adjusting part 5-5 will move up and down under the action of the screw, while the Y-axis moving block 5-3-1 rotates about the axis of the shaft hole where the Y-axis adjusting bolt 5-3-2 is located, thereby achieving the rotation of the transmission arm 2.

[0051] The X-axis fixing part 5-1 includes an X-axis fixing frame 5-1-1 mounted on the clamp 6. The X-axis fixing frame 5-1-1 is provided with a rotatable X-axis adjusting bolt 5-1-2, and the X-axis adjusting bolt 5-1-2 is arranged perpendicular to the Y-axis adjusting bolt 5-3-2.

[0052] The X-axis moving part 5-2 includes a base plate 5-2-3, a first connecting hole plate 5-2-1, and a second connecting hole plate 5-2-2 mounted on the base plate 5-2-3. An internally threaded block 5-2-4 is fixedly connected to the bottom surface of the base plate 5-2-3. The internally threaded block 5-2-4 has a threaded hole and is threadedly connected to the X-axis adjusting bolt 5-1-2. The two side walls of the internally threaded block 5-2-4 are slidably connected to the inner side walls of the X-axis fixing frame 5-1-1 via slide rails and grooves. When the X-axis adjusting bolt 5-1-2 rotates, the internally threaded block 5-2-4 moves along the axial direction of the X-axis adjusting bolt 5-1-2 under the guidance of the sliding connection of the side walls. This, in turn, drives the Z-axis fixing part 5-4, the adjusting component 5-6, the Z-axis adjusting part 5-5, the Y-axis adjusting part 5-3, and the transmission arm 2 to move back and forth.

[0053] like Figure 6 As shown, the fixture 6 includes a fixture frame 6-1, an X-axis fixing part 5-1 mounted on the fixture frame 6-1, a rotatably connected fixture screw 6-2 inside the fixture frame 6-1, a movable gripper block 6-3 threadedly connected to the fixture screw 6-2, the two side walls of the movable gripper block 6-3 slidingly connected to the inner wall of the fixture frame 6-1 via slide rails and grooves, a movable gripper 6-4 positioned below the movable gripper block 6-3, and a fixed gripper 6-5 positioned at the front end of the fixture frame 6-1. During operation, the fixed gripper 6-5 is placed inside the flange, the movable gripper 6-4 is placed outside the flange, and rotating the fixture screw 6-2 clamps the movable gripper 6-4 onto the flange.

[0054] like Figures 7 to 9 As shown, the transmission arm 2 includes a transmission arm housing 2-1. A drive gear 2-2 is rotatably connected to the top of the transmission arm housing 2-1, and a driven gear 2-3 is rotatably connected to the bottom of the transmission arm housing 2-1. The drive gear 2-2 and the driven gear 2-3 are connected by a chain 2-4. The drive gear 2-2 is powered by the drive structure 1, and the driven gear 2-3 is connected to the grinding end 3. The drive structure 1 drives the drive gear 2-2 to rotate, which in turn drives the driven gear 2-3 to rotate via the chain 2-4, thus causing the grinding end 3 to rotate for grinding.

[0055] In this embodiment, the drive structure 1 includes a motor 1-1. The output end of the motor 1-1 is connected to the shaft end of the drive gear 2-2 through a coupling 1-2, so that the motor 1-1 can drive the drive gear 2-2 to rotate.

[0056] In this embodiment, the grinding end 3 includes a grinding disc 3-1, and a universal joint 3-2 is provided at the center of the grinding disc 3-1. The universal joint 3-2 is connected to the shaft end of the driven gear 2-3. When the driven gear 2-3 rotates, it can drive the grinding disc 3-1 to rotate, and the position of the grinding disc 3-1 can be adjusted. The universal joint 3-2 is a prior art and will not be described here.

[0057] In this embodiment, a tensioning device 2-5 is also provided on the transmission arm housing 2-1 for tensioning the chain 2-4. The tensioning device 2-5 includes a tensioning sleeve 2-5-1 and a tension adjusting bolt 2-5-2. The tensioning sleeve 2-5-1 is slidably fitted onto the top of the transmission arm housing 2-1 (in this embodiment, the tensioning sleeve 2-5-1 and the top of the transmission arm housing 2-1 are slidably connected and engaged by a slide rail and slide groove structure). The drive gear 2-2 is rotatably connected to the tensioning sleeve 2-5-1 by means of a bearing. After passing through the tensioning sleeve 2-5-1, the drive gear 2-2 is connected to the coupling 1-2. The entire drive structure 1 is provided on one side of the tensioning sleeve 2-5-1 through the frame.

[0058] The bottom end of the tension adjusting bolt 2-5-2 is rotatably connected to the transmission arm housing 2-1, meaning the bottom end of the adjusting bolt 2-5-2 can rotate in a plane, but cannot move up and down. The upper end of the tension adjusting bolt 2-5-2 is threadedly connected to the top plate of the tension sleeve 2-5-1. In this embodiment, both the transmission arm housing 2-1 and the tension sleeve 2-5-1 are square tubes. When the tension adjusting bolt 2-5-2 is rotated, under the guiding action of the transmission arm housing 2-1 and the thread action of the tension sleeve 2-5-1, the tension sleeve 2-5-1 will drive the drive gear 2-2 and the entire drive structure 1 to move upward, thereby increasing the distance between the drive gear 2-2 and the driven gear 2-3, thus tensioning the chain 2-4.

[0059] like Figure 10 As shown, the grinding disc 3-1 is also equipped with a self-adhesive disc holder 3-1-1, which is used to attach sandpaper. The grinding disc 3-1 has a slot, and the self-adhesive disc holder 3-1-1 is detachably connected to the slot of the grinding disc 3-1 via a bolt assembly. By adjusting the position of the self-adhesive disc holder 3-1-1 in the slot, the maximum outer diameter of the self-adhesive disc holder 3-1-1 can be adjusted, thereby allowing sandpaper of different sizes to be attached.

[0060] The usage process of this utility model is as follows:

[0061] First, place the fixed clamp 6-5 on the valve flange and the movable clamp 6-4 on the outside of the valve flange. Rotating the clamp screw 6-2 will clamp the entire device. Then, slide the transmission arm 2 on the connecting sleeve 4 until the transmission arm 2 extends into the valve's sealing surface to meet the working requirements. Then, tighten the transmission arm 2 onto the connecting sleeve 4 using screws. Rotate the X-axis adjusting bolt 5-1-2 to bring the transmission arm 2 close to the area to be ground. Then, rotate the adjusting component 5-6 to rotate the Y-axis moving block 5-3-1, bringing the grinding end 3 of the transmission arm 2 onto the area to be ground. If it is necessary to adjust the position of the transmission arm 2 in the Y-axis direction, rotate the Y-axis adjusting bolt 5-3-2 to move the Y-axis moving block 5-3-1, which will then move the transmission arm 2.

[0062] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A portable valve grinding machine, comprising a transmission arm (2), one end of which is provided with a drive structure (1), and the other end of which is provided with a grinding end (3), characterized in that: The transmission arm (2) is slidably mounted inside the connecting sleeve (4), the connecting sleeve (4) is mounted on the adjusting device (5), and the adjusting device (5) is mounted on the clamp (6). The adjustment device (5) includes an X-axis fixed part (5-1), an X-axis moving part (5-2) that moves axially along the X-axis is provided on the X-axis fixed part (5-1), a Y-axis adjusting part (5-3) that moves axially along the Y-axis is rotatably connected to one end of the X-axis moving part (5-2), a Z-axis fixed part (5-4) that moves movably is provided to the other end of the X-axis moving part (5-2), a Z-axis adjusting part (5-5) that can move up and down is provided on the Z-axis fixed part (5-4), the Z-axis fixed part (5-4) and the Z-axis adjusting part (5-5) are connected by an adjusting member (5-6), and one end of the Z-axis adjusting part (5-5) is rotatably connected to one end of the Y-axis adjusting part (5-3). The connecting sleeve (4) is disposed on the Y-axis adjusting part (5-3), and the X-axis fixing part (5-1) is disposed on the clamp (6).

2. The portable valve grinding machine according to claim 1, characterized in that: The Y-axis adjustment part (5-3) includes a Y-axis moving block (5-3-1) and a Y-axis adjusting bolt (5-3-2). The Y-axis adjusting bolt (5-3-2) is rotatably disposed on the side of the X-axis moving part (5-2) near the connecting sleeve (4). A threaded hole is provided in one side of the Y-axis moving block (5-3-1). The Y-axis moving block (5-3-1) is threadedly connected to the Y-axis adjusting bolt (5-3-2). The other side of the Y-axis moving block (5-3-1) is provided with a connecting shaft hole (5-3-3), which is rotatably connected to the Z-axis adjusting part (5-5).

3. The portable valve grinding machine according to claim 2, characterized in that: The Y-axis moving block (5-3-1) has an L-shaped structure, and the Y-axis adjusting bolt (5-3-2) is threadedly connected to the corner position of the Y-axis moving block (5-3-1); The Y-axis moving block (5-3-1) has a dovetail groove (5-3-4) on its vertical side wall, and the connecting sleeve (4) has a dovetail slide rail (4-1) on one side wall. The dovetail slide rail (4-1) is located in the dovetail groove (5-3-4), and the dovetail slide rail (4-1) and the dovetail groove (5-3-4) are connected by bolt assembly.

4. The portable valve grinding machine according to claim 2, characterized in that: One end of the X-axis moving part (5-2) is provided with a first connecting hole plate (5-2-1), and the other end of the X-axis moving part (5-2) is provided with a second connecting hole plate (5-2-2). The Y-axis adjusting bolt (5-3-2) is rotatably mounted on the first connecting hole plate (5-2-1); The Z-axis fixing part (5-4) includes a Z-axis connecting rod (5-4-1) and a Z-axis slider (5-4-2). The Z-axis connecting rod (5-4-1) is rotatably connected to the second connecting hole plate (5-2-2), and the Z-axis connecting rod (5-4-1) is arranged parallel to the Y-axis adjusting bolt (5-3-2). The Z-axis slider (5-4-2) is slidably connected to the Z-axis connecting rod (5-4-1). One end of the Z-axis adjusting part (5-5) is provided with a pin. The Z-axis adjusting part (5-5) is rotatably connected to the connecting shaft hole (5-3-3) by means of the pin, and the rotation axis of the connecting shaft hole (5-3-3) is parallel to the Y-axis adjusting bolt (5-3-2). The other end of the Z-axis adjustment part (5-5) is provided with a vertically arranged threaded hole. The adjustment part (5-6) is a bolt structure. The adjustment part (5-6) is threadedly connected to the threaded hole of the Z-axis adjustment part (5-5). The bottom end of the adjustment part (5-6) passes through the Z-axis adjustment part (5-5) and is rotatably connected to the Z-axis slider (5-4-2).

5. The portable valve grinding machine according to claim 4, characterized in that: The X-axis fixing part (5-1) includes an X-axis fixing frame (5-1-1) disposed on the clamp (6), and a rotatable X-axis adjusting bolt (5-1-2) is disposed inside the X-axis fixing frame (5-1-1), and the X-axis adjusting bolt (5-1-2) is perpendicular to the direction of the Y-axis adjusting bolt (5-3-2); The X-axis moving part (5-2) includes a base plate (5-2-3), a first connecting hole plate (5-2-1) and a second connecting hole plate (5-2-2) are disposed on the base plate (5-2-3), and an internal thread block (5-2-4) is fixedly connected to the bottom surface of the base plate (5-2-3). The internal thread block (5-2-4) is provided with a threaded hole, and the internal thread block (5-2-4) is threadedly connected to the X-axis adjusting bolt (5-1-2). The two side walls of the internal thread block (5-2-4) are slidably connected to the two side inner walls of the X-axis fixing frame (5-1-1) by means of a slide rail groove.

6. The portable valve grinding machine according to claim 1, characterized in that: The clamp (6) includes a clamp frame (6-1), the X-axis fixing part (5-1) is disposed on the clamp frame (6-1), a clamp screw (6-2) is rotatably connected inside the clamp frame (6-1), a movable gripper block (6-3) is threadedly connected to the clamp screw (6-2), the two side walls of the movable gripper block (6-3) are slidably connected to the inner wall of the clamp frame (6-1) by means of a slide rail groove, and a movable gripper (6-4) is disposed below the movable gripper block (6-3). The front end of the clamp frame (6-1) is provided with a fixed gripper (6-5).

7. The portable valve grinding machine according to claim 1, characterized in that: The transmission arm (2) includes a transmission arm housing (2-1), a drive gear (2-2) is rotatably connected to the top of the transmission arm housing (2-1), and a driven gear (2-3) is rotatably connected to the bottom of the transmission arm housing (2-1). The drive gear (2-2) and the driven gear (2-3) are connected by a chain (2-4). The driving gear (2-2) is poweredly connected to the driving structure (1), and the driven gear (2-3) is connected to the grinding end (3).

8. The portable valve grinding machine according to claim 7, characterized in that: The drive structure (1) includes a motor (1-1), the output end of which is connected to the shaft end of the drive gear (2-2) via a coupling (1-2).

9. The portable valve grinding machine according to claim 7, characterized in that: The grinding end (3) includes a grinding disc (3-1), and a universal joint (3-2) is provided at the center of the grinding disc (3-1). The universal joint (3-2) is connected to the shaft end of the driven gear (2-3).

10. The portable valve grinding machine according to claim 7, characterized in that: The transmission arm housing (2-1) is also provided with a tensioning device (2-5), which includes a tensioning sleeve (2-5-1) and a tensioning adjusting bolt (2-5-2). The tensioning sleeve (2-5-1) is slidably sleeved on the top of the transmission arm housing (2-1), and the drive gear (2-2) is rotatably connected to the tensioning sleeve (2-5-1). The bottom end of the tension adjusting bolt (2-5-2) is rotatably connected to the outer shell (2-1) of the transmission arm, and the upper end of the tension adjusting bolt (2-5-2) is threadedly connected to the tension sleeve (2-5-1). The drive structure (1) is mounted on one side of the tensioning sleeve (2-5-1) via the frame.

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